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Tube Database (7,341 tube types · 1,270 archive entries)

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7888 vacuum tube outline illustration

Tube-number record

7888

0 archive entries

7888 is a tube type in the TubeDatabase archive (class: UHF Oscillator Triode). Recorded specifications: brand Sylvania, construction Triode, base Glass, socket Subminiature, maximum plate voltage 165 V, and maximum plate dissipation 3.3 W. The archive does not yet hold a photographed example of this type.

BrandSylvania
ClassUHF Oscillator Triode
BaseSubminiature
Filament26.5 V @ 45 mA

Construction

Primary TypeTriode
EnvelopeT-3
Base MaterialGlass
Sections1

Filament / Heater

Heater NotesCoated Unipotential Cathode

Absolute Maximum Ratings

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Condition 1100 V5800—278.5 mA
Condition 2150 V6500—2713 mA

Datasheets

Datasheet: 7888.pdf

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Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.

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Manufacturers

Brands

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    Plate Voltage165 V
    Plate Dissipation3.3 W
    Grid 1 Voltage-55 V
    Cathode Current22 mA
    H-C Voltage200 V

    Audio Performance

    Key Features
    • Premium Subminiature
    • High gm
    • Medium mu
    • UHF Oscillator
    • Severe shock resistance
    • High temperature operation